Guide to Geologic Hazards in Alaska

Related Terms

A mudflow composed chiefly of volcaniclastic materials on the flank of a volcano. The debris carried in the flow includes pyroclasts, blocks from primary lava flows, and epiclastic material. Syn: mudflow
(Neuendorf, K.K.E. and others, 2005)

Hot volcanic debris erupted onto the flanks of the volcano can melt snow, forming floods or fast-moving slurries of water, mud, rocks, and sand. Lahars may also occur when thick deposits of proximal ash are rapidly eroded by heavy rainfall following eruptions.
http://doi.org/10.14509/7042" href="/pubs/id/7042">(RI 2004-3)